19-2739; Rev 5; 6/11
Low-Capacitance, 2/3/4/6-Channel, ±15kV ESD
Protection Arrays for High-Speed Data Interfaces
Features
The MAX3202E/MAX3203E/MAX3204E/MAX3206E are
low-capacitance ±15kV ESD-protection diode arrays
designed to protect sensitive electronics attached to
communication lines. Each channel consists of a pair of
diodes that steer ESD current pulses to VCC or GND.
The MAX3202E/MAX3203E/MAX3204E/MAX3206E protect against ESD pulses up to ±15kV Human Body
Model, ±8kV Contact Discharge, and ±15kV Air-Gap
Discharge, as specified in IEC 61000-4-2. These
devices have a 5pF capacitance per channel, making
them ideal for use on high-speed data I/O interfaces.
♦ High-Speed Data Line ESD Protection
±15kV—Human Body Model
±8kV—IEC 61000-4-2, Contact Discharge
±15kV—IEC 61000-4-2, Air-Gap Discharge
The MAX3202E is a two-channel device intended for USB
and USB 2.0 applications. The MAX3203E is a triple-ESD
structure intended for USB On-the-Go (OTG) and video
applications. The MAX3204E is a quad-ESD structure
designed for Ethernet and FireWire® applications, and
the MAX3206E is a six-channel device designed for
cell phone connectors and SVGA video connections.
All devices are available in tiny 4-bump (1.05mm x
1.05mm) WLP, 6-bump (1.05mm x 1.57mm) WLP,
9-bump (1.52mm x 1.52mm) WLP, 6-pin (3mm x 3mm)
TDFN, and 12-pin (4mm x 4mm) TQFN packages and
are specified for -40°C to +85°C operation.
♦ 2-, 3-, 4-, or 6-Channel Devices Available
Applications
USB
Video
USB 2.0
Cell Phones
Ethernet
SVGA Video Connections
♦ Tiny WLP Package Available
♦ Low 5pF Input Capacitance
♦ Low 1nA (max) Leakage Current
♦ Low 1nA Supply Current
♦ +0.9V to +5.5V Supply Voltage Range
Ordering Information
PART
PIN-PACKAGE
MAX3202EEWS+T
4 WLP
MAX3202EETT+T
6 TDFN-EP*
MAX3203EEEWT+T
6 WLP
MAX3203EETT+T
6 TDFN-EP*
TOP MARK
+AA
+ADQ
+BG
+ADO
MAX3204EEWT+T
6 WLP
MAX3204EETT+T
6 TDFN-EP*
+ADP
+AL
MAX3206EEWL+T
9 WLP
+AQ
MAX3206EETC+
12 TQFN-EP*
+AACA
*EP = Exposed pad.
Note: All devices operate over -40°C to +85°C temperature
range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
FireWire
Selector Guide
PART
Typical Operating Circuit
ESD-PROTECTED
I/O PORTS
MAX3202EEWS+T
2
MAX3202EETT-T
2
MAX3203EEWT+T
3
MAX3203EETT-T
3
MAX3204EEBT-T
4
MAX3204EETT-T
4
MAX3206EEBL-T
6
MAX3206EETC
6
VCC
VCC
0.1µF
0.1µF
PROTECTED
CIRCUIT
I/0
I/0_
MAX3202E
MAX3204E
MAX3206E
MAX3208E
Pin Configurations appear at end of data sheet.
FireWire is a registered trademark of Apple Computer, Inc.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
1
MAX3202E/MAX3203E/MAX3204E/MAX3206E
General Description
MAX3202E/MAX3203E/MAX3204E/MAX3206E
Low-Capacitance, 2/3/4/6-Channel, ±15kV ESD
Protection Arrays for High-Speed Data Interfaces
ABSOLUTE MAXIMUM RATINGS
VCC to GND ...........................................................-0.3V to +7.0V
I/O_ to GND ................................................-0.3V to (VCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
2 × 2 WLP (derate 11.5mW/°C above +70°C)...............920mW
3 × 2 WLP (derate 12.3mW/°C above +70°C)...............984mW
3 × 3 WLP (derate 14.1mW/°C above +70°C).............1128mW
6-Pin TDFN (derate 24.4mW/°C above +70°C) ..........1951mW
12-Pin TQFN (derate 16.9mW/°C above +70°C) ........1349mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature .....................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
6 TDFN
Junction-to-Ambient Thermal Resistance (θJA)....................42°C/W
Junction-to-Case Thermal Resistance (θJC)...........................9°C/W
12 TQFN
Junction-to-Ambient Thermal Resistance (θJA)....................41°C/W
Junction-to-Case Thermal Resistance (θJC)...........................6°C/W
4 WLP
Junction-to-Ambient Thermal Resistance (θJA)...............87°C/W
6 WLP
Junction-to-Ambient Thermal Resistance (θJA)...............84°C/W
9 WLP
Junction-to-Ambient Thermal Resistance (θJA)...............71°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
ELECTRICAL CHARACTERISTICS
(VCC = +5V ±5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
Supply Voltage
VCC
Supply Current
ICC
Diode Forward Voltage
VF
Channel Clamp Voltage
(Note 3)
VC
CONDITIONS
MIN
TYP
0.9
1
IF = 10mA
0.65
MAX
UNITS
5.5
V
100
nA
0.95
V
TA = +25°C, ±15kV
Human Body Model,
IF = 10A
Positive transients
VCC + 25
Negative transients
-25
TA = +25°C, ±8kV
Contact Discharge
(IEC 61000-4-2), IF = 24A
Positive transients
VCC + 60
Negative transients
-60
TA = +25°C, ±15kV
Air-Gap Discharge
(IEC 61000-4-2), IF = 45A
Positive transients
VCC + 100
Negative transients
-100
Channel Leakage Current
TA = 0°C to +50°C (Note 4)
Channel Input Capacitance
VCC = 5V, bias of VCC/2
V
-1
5
+1
nA
7
pF
ESD PROTECTION
Human Body Model
±15
kV
IEC 61000-4-2
Contact Discharge
±8
kV
IEC 61000-4-2
Air-Gap Discharge
±15
kV
Note 2: Limits over temperature are guaranteed by design, not production tested.
Note 3: Idealized clamp voltages (L1 = L2 = L3 = 0) (Figure 1 ); see the Applications Information section for more information.
Note 4: Guaranteed by design. Not production tested.
2
_______________________________________________________________________________________
Low-Capacitance, 2/3/4/6-Channel, ±15kV ESD
Protection Arrays for High-Speed Data Interfaces
LEAKAGE CURRENT vs. TEMPERATURE
LEAKAGE CURRENT (pA)
1.10
0.90
0.70
INPUT CAPACITANCE vs. INPUT VOLTAGE
LEAKAGE CURRENT PER CHANNEL
100
10
MAX3202E toc03
12
INPUT CAPACITANCE (pF)
MAX3202E toc01
1.30
CLAMP VOLTAGE (V)
1000
MAX3202E toc02
CLAMP VOLTAGE vs. DC CURRENT
1.50
10
8
VCC = 3.3V
6
VCC = 5.0V
4
0.50
1
0.30
30
50
70
90
110
130
150
25
35
45
55
2
65
75
85
0
TEMPERATURE (°C)
DC CURRENT (mA)
1
2
3
4
5
INPUT VOLTAGE (V)
Pin/Bump Description
PIN/BUMP
MAX3202E
MAX3203E
MAX3204E
MAX3206E
NAME
FUNCTION
WLP
TDFNEP
WLP
TDFNEP
WLP
TDFNEP
WLP
TQFNEP
A1, B2
3, 6
A1,
A2, B3
1, 2, 4
A1, A2,
B2, B3
1, 2, 4,
5
A1, A3,
B1, B3,
C1, C3
1, 2, 3,
7, 8, 9
I/O_
A2
4
B1
3
B1
3
A2
5
GND
Ground
ESD-Protected Channel
B1
1
A3
6
A3
6
C2
11
VCC
Power-Supply Input. Bypass VCC to
GND with a 0.1µF ceramic capacitor.
—
2, 5
—
5
—
—
—
4, 6,
10, 12
N.C.
No Connection. Not internally
connected.
—
—
—
—
—
—
—
—
EP
Exposed Pad. Connect to GND. Only
for TDFN and TQFN packages.
_______________________________________________________________________________________
3
MAX3202E/MAX3203E/MAX3204E/MAX3206E
Typical Operating Characteristics
(VCC = +5V, TA = +25°C, unless otherwise noted.)
MAX3202E/MAX3203E/MAX3204E/MAX3206E
Low-Capacitance, 2/3/4/6-Channel, ±15kV ESD
Protection Arrays for High-Speed Data Interfaces
Detailed Description
The MAX3202E/MAX3203E/MAX3204E/MAX3206E are
diode arrays designed to protect sensitive electronics
against damage resulting from ESD conditions or transient voltages. The low input capacitance makes these
devices ideal for high-speed data lines. The
MAX3202E, MAX3203E, MAX3204E, and MAX3206E
protect two, three, four, and six channels, respectively.
The MAX3202E/MAX3203E/MAX3204E/MAX3206E are
designed to work in conjunction with a device’s intrinsic
ESD protection. The MAX3202E/MAX3203E/MAX3204E/
MAX3206E limit the excursion of the ESD event to
below ±25V peak voltage when subjected to the
Human Body Model waveform. When subjected to the
IEC 61000-4-2 waveform, the peak voltage is limited to
±60V when subjected to Contact Discharge and ±100V
when subjected to Air-Gap Discharge. The device that
is being protected by the MAX3202E/MAX3203E/
MAX3204E/MAX3206E must be able to withstand these
peak voltages plus any additional voltage generated by
the parasitic board.
d(IESD ) ⎞ ⎛
d(IESD ) ⎞
⎛
+ L2 x
VC = VCC + VF( D1) + ⎜ L1 x
⎝
dt ⎟⎠ ⎜⎝
dt ⎟⎠
For negative ESD pulses:
⎛
d(IESD ) ⎞ ⎛
d(IESD ) ⎞ ⎞
⎛
+ ⎜ L3 x
VC = − ⎜ VF( D2 ) + ⎜ L1 x
⎟
⎝
dt ⎠ ⎝
dt ⎟⎠ ⎟⎠
⎝
where IESD is the ESD current pulse.
POSITIVE SUPPLY RAIL
L2
D1
L1
I/O_
PROTECTED
LINE
Applications Information
D2
Design Considerations
Maximum protection against ESD damage results from
proper board layout (see the Layout Recommendations
section and Figure 2). A good layout reduces the parasitic series inductance on the ground line, supply line,
and protected signal lines.
The MAX3202E/MAX3203E/MAX3204E/MAX3206E ESD
diodes clamp the voltage on the protected lines during
an ESD event and shunt the current to GND or VCC. In
an ideal circuit, the clamping voltage, VC, is defined as
the forward voltage drop, VF, of the protection diode
plus any supply voltage present on the cathode.
For positive ESD pulses:
VC = VCC + VF
For negative ESD pulses:
VC = -VF
In reality, the effect of the parasitic series inductance
on the lines must also be considered (Figure 1).
For positive ESD pulses:
L3
GROUND RAIL
Figure 1. Parasitic Series Inductance
L2
VCC
L1
PROTECTED LINE
NEGATIVE ESD
CURRENT
PULSE
PATH TO
GROUND
D1
VC
I/O_
D2
GND
L3
Figure 2. Layout Considerations
4
_______________________________________________________________________________________
PROTECTED
CIRCUIT
Low-Capacitance, 2/3/4/6-Channel, ±15kV ESD
Protection Arrays for High-Speed Data Interfaces
A low-ESR 0.1µF capacitor must be used between VCC
and GND. This bypass capacitor absorbs the charge
transferred by an +8kV IEC-61000 Contact Discharge
ESD event.
Ideally, the supply rail (VCC) would absorb the charge
caused by a positive ESD strike without changing its
regulated value. In reality, all power supplies have an
effective output impedance on their positive rails. If a
power supply’s effective output impedance is 1Ω, then
by using V = I × R, the clamping voltage of VC increases by the equation VC = IESD x ROUT. An +8kV IEC
61000-4-2 ESD event generates a current spike of 24A,
so the clamping voltage increases by VC = 24A × 1Ω,
or V C = 24V. Again, a poor layout without proper
bypassing increases the clamping voltage. A ceramic
chip capacitor mounted as close to the MAX3202E/
MAX3203E/MAX3204E/MAX3206E VCC pin is the best
choice for this application. A bypass capacitor should
also be placed as close to the protected device as
possible.
• ±15kV using the Human Body Model
• ±8kV using the Contact Discharge method specified in IEC 61000-4-2
• ±15kV using the IEC 61000-4-2 Air-Gap Discharge
method
ESD Test Conditions
ESD performance depends on a number of conditions.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
Human Body Model
Figure 4 shows the Human Body Model, and Figure 5
shows the current waveform it generates when discharged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the device through a
1.5kΩ resistor.
RC
1MΩ
CHARGE-CURRENTLIMIT RESISTOR
HIGHVOLTAGE
DC
SOURCE
Cs
100pF
RD
1.5kΩ
DISCHARGE
RESISTANCE
DEVICE
UNDER
TEST
STORAGE
CAPACITOR
±15kV ESD Protection
ESD protection can be tested in various ways; the
MAX3202E/MAX3203E/MAX3204E/MAX3206E are
characterized for protection to the following limits:
I
100%
90%
Figure 4. Human Body ESD Test Model
IPEAK
IP 100%
90%
Ir
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
AMPERES
36.8%
10%
0
10%
tR = 0.7ns to 1ns
t
30ns
60ns
Figure 3. IEC 61000-4-2 ESD Generator Current Waveform
0
tRL
TIME
tDL
CURRENT WAVEFORM
Figure 5. Human Body Model Current Waveform
_______________________________________________________________________________________
5
MAX3202E/MAX3203E/MAX3204E/MAX3206E
During an ESD event, the current pulse rises from zero
to peak value in nanoseconds (Figure 3). For example,
in a 15kV IEC-61000 Air-Gap Discharge ESD event,
the pulse current rises to approximately 45A in 1ns
(di/dt = 45 x 109). An inductance of only 10nH adds an
additional 450V to the clamp voltage. An inductance of
10nH represents approximately 0.5in of board trace.
Regardless of the device’s specified diode clamp voltage, a poor layout with parasitic inductance significantly
increases the effective clamp voltage at the protected
signal line.
MAX3202E/MAX3203E/MAX3204E/MAX3206E
Low-Capacitance, 2/3/4/6-Channel, ±15kV ESD
Protection Arrays for High-Speed Data Interfaces
RC
50Ω to 100Ω
CHARGE-CURRENTLIMIT RESISTOR
HIGHVOLTAGE
DC
SOURCE
Cs
150pF
The Air-Gap Discharge test involves approaching the
device with a charged probe. The Contact Discharge
method connects the probe to the device before the
probe is energized.
RD
330Ω
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Layout Recommendations
DEVICE
UNDER
TEST
Figure 6. IEC 61000-4-2 ESD Test Model
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. The MAX3202E/
MAX3203E/MAX3204E/MAX3206E help users design
equipment that meets Level 4 of IEC 61000-4-2.
The main difference between tests done using the
Human Body Model and IEC 61000-4-2 is higher peak
current in IEC 61000-4-2. Because series resistance is
lower in the IEC 61000-4-2 ESD test model (Figure 6)
the ESD-withstand voltage measured to this standard is
generally lower than that measured using the Human
Body Model. Figure 3 shows the current waveform for
the ±8kV IEC 61000-4-2 Level 4 ESD Contact
Discharge test.
6
Proper circuit-board layout is critical to suppress ESDinduced line transients. The MAX3202E/MAX3203E/
MAX3204E/MAX3206E clamp to 100V; however, with
improper layout, the voltage spike at the device is
much higher. A lead inductance of 10nH with a 45A
current spike at a dv/dt of 1ns results in an ADDITIONAL 450V spike on the protected line. It is essential that
the layout of the PC board follows these guidelines:
1) Minimize trace length between the connector or
input terminal, I/O_, and the protected signal line.
2) Use separate planes for power and ground to reduce
parasitic inductance and to reduce the impedance to
the power rails for shunted ESD current.
3) Ensure short ESD transient return paths to GND
and VCC.
4) Minimize conductive power and ground loops.
5) Do not place critical signals near the edge of the
PC board.
6) Bypass VCC to GND with a low-ESR ceramic capacitor as close to VCC as possible.
7) Bypass the supply of the protected device to GND
with a low-ESR ceramic capacitor as close to the
supply pin as possible.
_______________________________________________________________________________________
Low-Capacitance, 2/3/4/6-Channel, ±15kV ESD
Protection Arrays for High-Speed Data Interfaces
TEST
Temperature Cycle
Operating Life
Moisture Resistance
CONDITIONS
DURATION
FAILURES PER SAMPLE SIZE
-35°C to +85°C,
-40°C to +100°C
150 cycles,
900 cycles
0/10,
0/200
TA = +70°C
240hr
0/10
0/10
-20°C to +60°C, 90% RH
240hr
Low-Temperature Storage
-20°C
240hr
0/10
Low-Temperature Operational
-10°C
24hr
0/10
0/15
Solderability
ESD
8hr steam age
—
±2000V, Human Body Model
—
0/5
TJ = +150°C
168hr
0/45
High-Temperature Operating Life
Functional Diagrams
MAX3202E
MAX3203E
MAX3204E
MAX3206E
VCC
VCC
VCC
VCC
I/O1
I/O2
I/O1
GND
I/O2
I/O3
GND
I/O1
I/O3
I/O2
GND
I/O4
I/O1
I/O2
I/O4
I/O3
I/O5
I/O6
GND
Chip Information
PROCESS: BiCMOS
_______________________________________________________________________________________
7
MAX3202E/MAX3203E/MAX3204E/MAX3206E
Table 1. Reliability Test Data
MAX3202E/MAX3203E/MAX3204E/MAX3206E
Low-Capacitance, 2/3/4/6-Channel, ±15kV ESD
Protection Arrays for High-Speed Data Interfaces
Pin Configurations
TOP VIEW
(BUMPS ON BOTTOM)
GND
I/O1
A1
A2
I/O3
I/O2
VCC
I/O3
I/O2
VCC
A1
A2
A3
A1
A2
A3
GND
MAX3202E
VCC
B1
B2
MAX3203E
I/O2
B1
GND
WLP
I/O3
A1
A2
A3
I/O4
I/O2
B1
MAX3206E
B3
I/O5
I/O1
C1
C2
C3
I/O6
MAX3204E
B3
B1
I/O1
GND
WLP
B2
B3
I/O4
I/O1
VCC
WLP
WLP
+
MAX3202E
MAX3203E
+
+
VCC
1
6
I/02
I/01
1
6
VCC
I/01
1
6
VCC
N.C.
2
5
N.C.
I/02
2
5
N.C.
I/02
2
5
I/04
I/01
3
4
GND
TDFN
GND
3
EP
VCC
N.C.
12
11
10
MAX3204E
+
EP
N.C.
4
I/03
TDFN
GND
3
I/01
1
I/02
2
I/03
3
MAX3206E
9
I/06
8
I/05
7
I/04
EP
EP
4
I/03
TDFN
4
5
6
N.C.
GND
N.C.
TQFN
EP = EXPOSED PADDLE. CONNECT TO GND.
Package Information
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages. Note that a "+", "#", or
"-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE CODE
OUTLINE NO.
LAND
PATTERN NO.
4 WLP
W41A1+2
21-0455
Refer to Application Note 1891
6 WLP
W61C1+2
21-0463
Refer to Application Note 1891
PACKAGE TYPE
8
9 WLP
W91B1+5
21-0067
Refer to Application Note 1891
6 TDFN-EP
T633+2
21-0137
90-0058
12 TQFN-EP
T1244+4
21-0139
90-0068
_______________________________________________________________________________________
Low-Capacitance, 2/3/4/6-Channel, ±15kV ESD
Protection Arrays for High-Speed Data Interfaces
REVISION
NUMBER
REVISION
DATE
3
12/07
Added 3202EEWS+T TDFN and TQFN packages, updated Package Information
4
12/09
Corrected part numbers and pin packages in the Ordering Information table,
Absolute Maximum Ratings, Selector Guide, Pin Description, and Pin
Configurations.
5
6/11
Updated to show available packages as WLP, not UCSP
DESCRIPTION
PAGES
CHANGED
1, 2, 3, 4, 6, 8,
12–15
1–3, 8–15
1, 2, 3, 6, 8
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9
© 2011 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
MAX3202E/MAX3203E/MAX3204E/MAX3206E
Revision History
工商网监
湘ICP备2023018690号
